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<h1>Lights <img src="images/lights1.jpg"></h1>

<p>Lights are <a href="objects.htm">objects</a> which allow you to light a <a href="scenes.htm">scene</a>. Without any light in the scene, objects appear in unshaded colors (in that case objects are only illuminated with an ambient light component that can be set in the <a href="environmentPropertiesDialog.htm">environment dialog</a>). Following figure illustrates the effect of lights in a scene: </p>

<p align=center><img src="images/lights2.jpg"></p>
<p class=imageLabel>[Scene illuminated (1) with ambient light only, (2) with a directional light, (3) with a spotlight]</p>
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<p>There can be up to eight active lights in a scene. There are three different types of lights:
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<li><strong>Omnidirectional lights</strong>: an omnidirectional light will illuminate the scene from a point light source.
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<li><strong>Spotlights</strong>: a spotlight will illuminate the scene only in one specific direction. You can adjust the light cone of a spotlight.
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<li><strong>Directional lights</strong>: a directional light's position is not important. Only the direction has importance and all objects in a scene will be illuminated in a similar fashion.
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<p align=center><img src="images/lights3.jpg"></p>
<p class=imageLabel>[(1) omnidirectional light, (2) spotlight, (3) directional light]</p>
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<p>A light can be added to the scene with [Menu bar --&gt; Add --&gt; Light].
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